Web specifications support in Opera Presto 2.7

Last update: February 11, 2011 incorporating Core Milestone 89, integration points 83 through 89

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Overview

Core Milestone integration points added since Opera Presto 2.6

Opera web specification support tables

Overview

Opera Presto rendering engine

This document and its associated support tables apply specifically to the Opera Presto 2.7 rendering engine. It incorporates Opera Presto web specification support up to, and including the latest Core Milestone and integration point. Changes and additions occurring since Opera Presto 2.6 are identified with their specific Core Milestones. Please see the following Core Milestone integration points added since Opera Presto 2.6 topic.

Opera desktop, device, and mobile products

Opera products use and depend upon various parts of the Opera Presto rendering engine and its web specification features. It is important to note that while the latest Opera Presto rendering engine has incorporated new web specification features, they may not have been added to the latest released versions of Opera products.

The Opera user agent string

Opera products will identify which Opera Presto version and Core Milestone integration point they are using in their user agent string. Depending on your Opera product, the Opera user agent string is placed in the "About Opera" page, found by typing opera:about in the address bar, or by clicking "Help > About Opera" in the Menu. Here is an example:

Opera/9.80 (Windows NT 5.1; U; en) Presto/2.7.62 Version/11.01

This example user agent string belongs to Opera 11.01 for desktop. It describes that it is using the Opera Presto 2.7 (Presto/2.7) rendering engine, incorporating Core Milestone integration point 62 (.62). This Opera desktop product can contain web specification support as provided in Opera Presto 2.7, Milestone 65 core integration point 62 and earlier. It does not contain web specifications which have been included in later builds of Opera Presto 2.7 with Core Milestone 65 core integration point 63 and later.

A high-level overview of current web specifications support in Opera products is available on opera.com at: Web specifications support in Opera products: an overview.

Opera articles

For further reference, and where applicable, Opera web specification support table documents now contain hyperlinks to Opera technical articles written by leading subject matter experts. These are sourced from Opera's extensive developer website, dev.opera.com.

Core Milestone integration points added since Opera Presto 2.6

Implemented in Opera Presto 2.7, Core Milestone 38 of October 21, 2010

Milestone 38 contains core integration points 43 through 47.

• Improved the Opera Widget/Gadget implementation
  • W3C Widget Packaging and Configuration: Implement BIDI support; see W3C Widget Packaging and Configuration, Working Draft 8 October 2010
  • The 'view-mode' Media Feature has been updated to the newer draft; see W3C The 'view-mode' Media Feature, W3C Candidate Recommendation 24 June 2010
  • Support is added for W3C Widget Updates; see: W3C Widget Updates, W3C Working Draft 28 September 2010
• Improved site compatibility
  • Added support for document.head; see W3C HTML5 3 Semantics, structure, and APIs of HTML documents: section 3.1.4 DOM tree accessors

Implemented in Opera Presto 2.7, Core Milestone 52 of November 5, 2010

Milestone 52 contains core integration points 48 through 52.

• Control browser viewport
  • Implemented touch events. This feature is not standardized yet. Implementation is based on real-world (iPhone) testing and Apple documentation:
    • HandlingEvents.html
    • Touch.html
    • TouchEvent.html
    • TouchList.html
• Canvas improvements
  • Canvas.createImageData is now supported.
    • W3C reference: createImageData() method

Implemented in Opera Presto 2.7, Core Milestone 60 of November 18, 2010

Milestone 60 contains core integration points 53 through 60.

• SVG: Implemented smarter traversals
  • This improved conformance with the W3C SVG 1.1 Second Edition.
• Improved support to the W3C Widget Interface API.
  • Opera no longer provides extended APIs to clean W3C widgets.

Implemented in Opera Presto 2.7, Core Milestone 65 of December 2, 2010

Milestone 65 contains core integration points 61 through 65.

HTML5 elements

• Added:
  • Support for the <progress> element
  • Support for the <meter> element

HTML5 Forms

• Added:
  • Support for <input type="search">
  • Support for <input type="file" multiple>
  • Support for <input placeholder="">
  • Support for <input type="color">
  • Support for <input type="tel">
• Improved:
  • Updated the language string for HTML5 Forms
  • <input type="email"> validation
  • Default value for <input type="range">
  • out-of-range @value in <input type="range">
  • <input type="email"> now supports multiple emails as per the specification
  • Autofixing <input type="url"> without http://
• Removed:
  • Support for <input type="file" min max>
  • Support for allowing a single control to be associated with more than one form
  • Support for Web Forms hasFeature

Implemented in Opera Presto 2.7, Core Milestone 70 of December 16, 2010

Milestone 70 contains core integration points 66 through 70.

DOM Level 3 Events

• mouseenter event
• mouseleave event
• focusin event handler
• focusout event handler

HTML5 elements and attributes

• <section> element
• <nav> element
• <article> element
• <aside> element
• <hgroup> element
• <header> element
• <footer> element
• <figure> element
• <figcaption> element
• <mark> element
• hidden global attribute

Implemented in Opera Presto 2.7, Core Milestone 81 of January 7, 2011

Milestone 81 contains core integration points 71 through 81.

Transport Layer Security protocols

• TLS 1.1 and 1.2 are now disabled by default.

Web Open Font Format (WOFF)

• Added WOFF support up to the current state of the W3C Working Draft, with the exception of:
  • SOR (Same Origin Restriction) is not implemented.

Internet Assigned Numbers Authority (IANA)

• Charset CP51932 is now implemented as an alias of euc-jp.

ECMAScript

• Opera no longer supports javascript: urls as inline url resources.

Implemented in Opera Presto 2.7, Core Milestone 82 of January 20, 2011

Milestone 82 contains core integration point 82.

W3C CSS Device Adaptation (viewport)

• Opera Presto provides support for W3C CSS Device Adaptation (viewport) with the following conditions and exceptions:
  • The viewport META element and its properties is supported.
  • The @viewport rule is supported with this condition:
    • Implementation must occur with an Opera prefixed -o- vendor extension (@-o-viewport).
  • The @viewport properties are supported with this exception:
    • The orientation property not supported.
  • Media query evaluation for @viewport is not compliant with the current draft.

Implemented in Opera Presto 2.7 (Final), Core Milestone 89 of February 4, 2011

Milestone 89 contains core integration points 83 through 89.

Droid fonts

• Added a third-party definition for Droid fonts. These are optional fonts that can be shipped with Opera, licensed under the Apache License 2.0.

Form field multiple file transfer

• Disabled part of point 3.3 from RFC 1867: "If multiple files are selected, they should be transferred together using the "multipart/mixed" format."
• Disabled a corresponding part of point 4.2 from RFC 2388: "If the value of a form field is a set of files rather than a single file, that value can be transferred together using the "multipart/mixed" format."

Opera web specification support tables

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